Comparison of refractive errors among SN/LD children and adults with LD
| A | B | C | ||
|---|---|---|---|---|
| Woodhouse et al (n=147), n (%) | SN (n=228), n (%) | LD (n=172), n (%) | Comparison of A vs C (χ2 test) | |
| Emmetropia (−1.00 to +0.90) | 49 (33.3) | 120 (52.6) | 80 (46.5) | p=0.015 |
| Mild hypermetropia (+1.00 to +2.90) | 42 (28.6) | 61 (26.8) | 50 (29.1) | p=0.922 |
| Moderate to high hypermetropia (+3.00 and above) | 21 (14.3) | 35 (15.4) | 32 (18.6) | p=0.297 |
| Low myopia (−1.10 to −3.00) | 16 (10.9) | 4 (1.8) | 4 (2.3) | p=0.002 |
| Moderate to high myopia (> −3.10) | 19 (12.9) | 8 (3.5) | 6 (3.5) | p=0.002 |
| Astigmatism 0.25–1.00 DC | 94 (63.9) | 89 (39) | 60 (34.9) | p<0.001 |
| Astigmatism >1.00 DC | 53 (36.1) | 48 (21.1) | 38 (22.1) | p=0.006 |
‘A’ refers to the Woodhouse et al data.9 ‘B’ refers to the total population of children with special needs. ‘C’ refers to the LD subgroup within the special needs cohort.
LD, learning disability; SN, special needs.